/Engine/Source/Editor/BlueprintGraph/Public/BlueprintActionFilter.h
Retrieves a class associated with the wrapped action. Intended to be the action's class "owner". Could be null if the action is keyed to an asset. Will not be the spawner's NodeClass (even if it is keyed to it in the database).
The class that this action conceptually belongs to (null if the action is keyed to an asset that we cannot derive a class from).
[UClass](API\Runtime\CoreUObject\UObject\UClass) const * GetOwnerClass()